22155340 has 24 divisors (see below), whose sum is σ = 46957680. Its totient is φ = 8779968.

The previous prime is 22155317. The next prime is 22155361. The reversal of 22155340 is 4355122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2902 + ... + 7261.

It is an arithmetic number, because the mean of its divisors is an integer number (1956570).

Almost surely, 2^22155340 is an apocalyptic number.

22155340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22155340 is an abundant number, since it is smaller than the sum of its proper divisors (24802340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22155340 is a wasteful number, since it uses less digits than its factorization.

22155340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10281 (or 10279 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 22155340 is about 4706.9459312807. The cubic root of 22155340 is about 280.8618850732.

The spelling of 22155340 in words is "twenty-two million, one hundred fifty-five thousand, three hundred forty".